Timing-clutch for dial and cylinder knitting-machines



R. W. SCOTT.

TIMING CLUTCH FOR DIAL AND CYLlNDER KNITTING MACHINES.

APPLICATION FILED AUG.22, 1919.

2 SHEETSSHEET 1.

a wvev /toz b 71055111 IV. SCOTT $q alto amp I R. w. SCOTT. TIMINGCLUTCH FOR DIAL AND CYLINDER KNITTING MACHINES.

APPLICATION FILED AUG.22, I919.

1,356,092. Patnted 0ct.19,1920..

2 SHEETSSHEET 2.

FoaRT IV. See-r1- 1, AC4 Gum/M 0 UNITED STATES PATENT OFFICE.

ROBERT W. SCOTT, OF BABYLON, NEW YORK, ASSIGNOR TO SCOTT AND WILLIAMS,INC.,

OF NEW YORK, N. Y., A CORPORATION OF MASSACHUSETTS.

TIMING-CLUTCH FOR DIAL AND CYLINDER KNITTING-MACHINES.

Application filed August 22, 1919.

To all whom it may concern Be it known that I. Ronnu'r IV. SCOTT, acitizen of the United States of America, residing at Babylon, in thecounty of Nassau and State of New York, have invented certain new anduseful Improvements in Timing-Clutches for Dial and CylinderKnitting-Machines, of which the following is a specification.

My invention relates to rotary knitting machines of that class in whicha cylinder carrying knitting needles is combined with a dial carryingcooperating knitting instruments, such as needles, as in rib knittingmachines, or hooks, as in machines of the type described in my UnitedStates Letters Patent No. 1,282,958 dated Oct. 29, 1918.

The object of my invention is to so construct a knitting machine of thecombined cylinder and dial type that whenever desired the dial may belifted up, to permit convenient access to the fabric or interior of thecylinder, or its needles or other parts carried by it, yet whenever thedial is returned to position the needles or other knitting instrumentscarried by the dial will be caused to automatically register incooperating relation to the knitting instruments carried by thecylinder.

In the accompanying drawings I have shown my invention, for the sake ofillustration, as applied to a knitting machine of the general characterof that set forth in my above mentioned patent.

Figure 1 is a front elevation partly in section on the line 1-1 of Fig.2, with the latch guard down in its normal position;

, Fig. 2 is a side elevation, with parts broken away, and showing thedial-carrying frame raised on its hinge;

Fig. 3 is a face view of one part of a form of clutch which may be used.

In these drawings, D represents a part of the knitting machine bed platein which is mounted the rotating needle cylinder 260 adapted to bedriven by a bevel wheel 31 on a horizontal shaft 32. This cylindercarries the usual needles a to be raised, and lowered by cams on astationary cam cylinder C, or other suitable means.

The rotary dial 4, which carries the radially actuated knittinginstruments to cooperate with the cylinder needles, may be carried bythe latch guard ring 550 through Specification of Letters Yatent.

Patented Oct. 19, 1920.

Serial No. 319,163.

the medium of a frame 1 mounted on this ring (Fig. 1). Rotary motion maybe imparted to this dial in unison with the needle cylinder from theshaft 32 through a train of gears such as shown in Fig. 1. As there.illustrated the train includesa bevel 33. on the back of the wheel 31,and meshing into a bevel pinion 34 on the lower end of a verticalspindle 35, which carries at its upper end a pinion 36 in a gear box 42mounted on the bed plate D. In line with the spinmounted in bearings 41on the gear boX 42, and motion is transmitted from the spindle 35 to thespindle 40 through the medium of gears 36. 37, 38 and 39, such as totransmit to the dial a peripheral speed the same as that given to thering of needles in the cylinder 260.

In connection with the spindle 40 isa bevel wheel 43 to transmit motionthrough a bevel pinion 44, shaft 45, and bevel gears 46 and 47 to theshaft 48 carrying the dial 4, these shafts 45 and 48 being mounted inhearings on the frame 1 on the latch guard ring 550.

This latch guard ring 550, as seen in Fig. 2, is hinged as usual at 549to a post 548 on the bed plate D in order that the latch ring may beraised up, when desired, to permit of access to the fabric being knittedor the needle cylinder and the needles and other parts carried by thecylinder.

Ordinarily the machine has been so constructed that when the latch guardring was thus raised, a pinion such as that at 44 was thereby lifted outof gear with the pinion 43. This had the disadvantage that, when thelatch guard ring and the parts carried by it were to be dropped down toposition again, special care and manipulation by the operator werenecessary to see that the separated gears re-meshed in a wayto bring theknitting instruments in the needle cylinder and dial into properrelation.

I overcome this disadvantage by interposing in the train of gears aone-position clutch, and I find it convenient to make this clutch thesole separating point in the train.

.65 dle 35, and above it, is another spindle 40 or formed in one with,the pinion 4:3, which turns on a pin 3 secured to the cover piece 2,mounted on the top of the frame 1.

One half of the clutch, say the part 51, carries a fixed pin 52,projecting on its lower face, while the other half preferably has twoprojecting pins 53 and 54 (Figs. 2 and 3) beveled on their outer sides,these pins being normally held in the positions shown in Fig. 2 bysprings 55 on the rear face of the clutch disk, but permitting either ofthese pins to be pushed downward.

Thus, when the latch guard ring is dropped down to normal position,after having been raised, the two parts of the clutch will become lockedtogether only in one position, that is, when the pin 52 lies between thetwo pins 53 and 54. When the two parts of the clutch are broughttogether in any other relative positions of these pins, the part 50 ofthe clutch will revolve without the part 51 until the pin 52 slides pastone of the pins 53, 5st, pushing it back by acting on its beveled face,until the pin 52 contacts with the vertical face of the otherspringpressed pin, whereupon the pin which had been pressed back willsnap into place behind the pin 52 and cause a locking engagement.

I prefer to use these two spring pins, or their equivalents, so that theclutch may act no matter in which direction the machines may berevolving.

Although I have described the needle cylinder and dial as the movingparts, it will be understood that my invention may be equally wellapplied to a rotary machine in which the cams which actuate the knittinginstruments are the moving parts.

I claim as my invention 1. A rotary knitting machine having a cylinderand dial, both carrying cooperating knitting instruments and gearingtherefor driven from a common source, in combination with means forbreaking the geared connection between the dial and cylinder on liftingthe dial from the cylinder and an interposed positioning clutch in thegearing, whereby on returning the dial to position, registry of theknitting instruments carried by the cylinder and dial will be insured.

2. A rotary knitting machine having a cylinder and dial, both carryingcooperating knitting instruments and gearing therefor driven from acommon source, in combination with means for breaking the gearedconnection between the dial and cylinder on lifting the dial from thecylinder, and a oneposition clutch interposed in the gearing for thedial, as and for the purpose described.

3. A rotary knitting machine having a cylinder and dial, both carryingcooperating knitting instruments and gearing therefor driven from acommon source, in combination with means for breaking the gearedconnection between the dial and cylinder on lifting the dial from thecylinder, and a clutch interposed in the gearing for the dial, one partof the clutch having a single projection, while the other has twoprojections with outer beveled faces and spring means to let theprojections snap past each other into locking engagement.

4. A rotary knitting machine having a cylinder and dial, both carryingcooperating knitting instruments and gearing therefor driven from acommon source, in combination with a positioning clutch interposed inthe gearing and means for separating parts of the'clutch on lifting thedial from the cylinder, whereby on returning the dial to position,registry of the knitting instruments carried by the cylinder and dialwill be insured.

In testimony whereof I have signed my name to this specification.

ROBERT w. soorr.

